I pulled this engine out my 67 RS Camaro and have found out that it is a '68 MO302. I wanted to see if the original car was still out there and would love to have the car and engine reunited. The engine ran before I pulled it out and there were not any odd noises. I have not pulled it any farther apart than what you see, but was told that the engine was all original and had only been transplanted into the car. I know the carb and distributor are not original though. The owner of the rest of the car could have it for what I payed for it.

It has to be K 1 6 with a casting number of 3890462. Heads aren't original '68 302 heads.

Paul

Do you know what the heads are then?

Yes, the casting date of K 1 6 "translates" to November 1, 1966; so the heads are off a 1967 model year vehicle. The 3890462 heads were used on Camaros, Chevelles, Corvettes, Novas, and full-size Chevys in 1967. Do you know if the heads are 2.02s or 1.94s?

That's a good question. 68 302 should be 291 heads. What did they use on the 67 302. 461 462?

1967 302s could be equipped with either the 3890462 or the 3917291 cylinder heads. 1968 302s used only the 3917291 cylinder head. The difference between '67 and '68 3917291 cylinder heads is the '68 heads were drilled and tapped for a water temperature sensor while '67 heads were not. The 3782461 cylinder head was never used on the Camaro.

With the cylinder head removed from the block, measure the diameter of one of the intake valve heads. If it measures just over 2", it is a 2.02 cylinder head and if measures less than 2", it is a 1.94 cylinder head.